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**1. Homework Statement**

A 17.89 cm diameter, 42.43 cm tall steel cylinder (rsteel=7900 kg/m3) floats in mercury. The axis of the cylinder is perpendicular to the surface. What length of steel is above the surface?

**2. Homework Equations**

Pb=Pa+density*g*h

**3. The Attempt at a Solution**

Pa=101300

Pb?

density= 7900 kg/m^3

H=(total length-submerged)

g=(9.8)

Pb=101300+((9.8*7900*(total length-submerged))

I have 2 unkowns. What would Pb be?